Patent US2617587A successfully refreshed from Google Patents.
US2617587A
Expired / Lapsed
US
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Computer component
Assignee: Phillips Petroleum Co
•
Filing: 1949-12-20
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Granted: 1952-11-11
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Expires: 1969-12-20
Abstract
No abstract record available.
Inventors
- 👤 Paul G Carpenter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:25
CPC Classifications
G; G06; G06K; G06K11/00; G06K11/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2226677A
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US2242506A
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US2262354A
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US2258859A
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US2354391A
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US2445041A
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US2462263A
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GB601893A
Cited
US2461667A
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US2489305A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-11 | 1956-05-12 | 1956-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-11 | 1960-05-12 | 1960-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-11 | 1964-05-12 | 1964-11-11 | $7700.00 | Window Closed / Lapsed |